Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o tempo de aposentadoria do piloto Toulo de Graffenried?
 ###Tabelas: CREATE TABLE classification (classification_id AUTO_INCREMENT PRIMARY KEY, Driver VARCHAR, Constructor VARCHAR, Laps INT, Time/Retired VARCHAR, Grid INT) CREATE TABLE major_intersections (major_intersections_id AUTO_INCREMENT PRIMARY KEY, County VARCHAR, Location VARCHAR, Distance INT, Total INT, Notes VARCHAR) CREATE TABLE list_of_recent_lower_tier_county_cup_south_winners (list_of_recent_lower_tier_county_cup_south_winners_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Junior (South) Winners VARCHAR, Intermediate (South) Winners VARCHAR, Minor (South) Winners VARCHAR, Primary (South) Winners VARCHAR) CREATE TABLE senior_major_winners (senior_major_winners_id AUTO_INCREMENT PRIMARY KEY, Year INT, Senior PGA Championship VARCHAR, The Tradition VARCHAR, Senior Players Championship VARCHAR, U.S. Senior Open VARCHAR, Senior British Open VARCHAR) CREATE TABLE 6401–6500 (6401–6500_id AUTO_INCREMENT PRIMARY KEY, NGC number INT, Object type VARCHAR, Constellation VARCHAR, Right ascension ( J2000 ) VARCHAR, Declination ( J2000 ) VARCHAR, Apparent magnitude INT)  
SELECT Time/Retired FROM classification WHERE Driver = toulo de graffenried